16 Comae Berenices
Star in the constellation Coma Berenices
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16 Comae Berenices is a single[9] star in the northern constellation of Coma Berenices. 16 Comae Berenices is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96.[2] Based upon an annual parallax shift of 11.7 mas,[1] it is located about 279 light years away.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | 12h 26m 59.29615s[1] |
| Declination | +26° 49â² 32.5273â³[1] |
| Apparent magnitude (V) | 4.96[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A4 V[3] |
| Astrometry | |
| Radial velocity (Rv) | +0.40±0.70[4] km/s |
| Proper motion (μ) | RA: â11.456[1] mas/yr Dec.: â9.220[1] mas/yr |
| Parallax (Ï) | 11.6745±0.2116 mas[1] |
| Distance | 279 ± 5 ly (86 ± 2 pc) |
| Details[3] | |
| Mass | 2.54±0.03 Mâ |
| Radius | 3.71[5] Râ |
| Luminosity | 68.6+3.5 â3.3 Lâ |
| Surface gravity (log g) | 3.67[6] cgs |
| Temperature | 8,299+57 â58 K |
| Metallicity [Fe/H] | â0.3[7] dex |
| Rotational velocity (v sin i) | 80 km/s |
| Age | 310[6] Myr |
| Other designations | |
| 16 Com, BD+27°2134, FK5 2997, HD 108382, HIP 60746, HR 4738, SAO 82314[8] | |
| Database references | |
| SIMBAD | data |
This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V.[3] It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of 18.2 AU with a temperature of 180 K.[5] 16 Com has 2.54[3] times the mass of the Sun and 3.71[5] times the Sun's radius. The star is 310[6] million years old with a projected rotational velocity of 80 km/s.[3] It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature of 8,299 K.[3]